Meiosis is a special type of cell division necessary for sexual reproduction in eukaryotes. The cells produced by meiosis are gametes. In many organisms, gametes are called sperm and egg cells. (adapted from wikipedia)

Video by James LeFountain and Rudolf Oldenburg (link)  State University of New York at Buffalo and Marine Biological Laboratory in Woods Hole

“A time-lapse movie of metaphase during meiosis I through cytokinesis in a primary spermatocyte of the crane-fly Nephrotoma suturalis. Images were acquired with a liquid crystal polarized light microscope (LC-PolScope) that reveals microtubules as birefringent structures in cells without antibody labeling or special staining regimens. Here, one look up table (“green fire blue”) of ImageJ was used to colorize the images; this gives the extremely birefringent structures (e.g., microtubular spindle fibers) a bright yellow appearance, while less birefringent structures appear green to blue. The background is nearly black because it is not birefringent.” (from

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This entry was posted in Cells, Reproductive.